Matnog, officially the Municipality of Matnog (Waray Sorsogon: Bungto san Matnog; Waray: Bungto han Matnog, Tagalog: Bayan ng Matnog), is a municipality in the province of Sorsogon, Philippines and is the southernmost part of Luzon. According to the 2024 census, it has a population of 42,444 people.

The town's port is one of the busiest in the region, playing host to millions of people crossing the San Bernardino Strait to Northern Samar annually. It is the jump off point to Visayas and vice versa.

Local elders say that the name Matnog comes from the Bicol word "matonog", which means very audible that describes the loud sound of the waves. Some attribute the name to the sound of the gong used by early chieftains to call council meetings, while others link it to the noise of the tidal rip in the San Bernardino Strait.

In 1785, Matnog became a barrio of Bulusan, with Juan Evangelista serving as its first head. Fifteen years later, it was designated as Puerto Civil. It later became a separate parish on November 21, 1963.

Matnog is 65 kilometers (40 mi) from Sorsogon City and 646 kilometers (401 mi) from Manila.

Matnog is politically subdivided into 40 barangays. Each barangay consists of puroks and some have sitios.

The native people that settled in Matnog are the Agta, Tabangon, and Cimaron Tribe.

Poverty incidence of Matnog